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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:49:04 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:49:04 +0000 |
commit | 16f504a9dca3fe3b70568f67b7d41241ae485288 (patch) | |
tree | c60f36ada0496ba928b7161059ba5ab1ab224f9d /src/libs/xpcom18a4/xpcom/tests/TestCOMPtr.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.tar.xz virtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.zip |
Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/tests/TestCOMPtr.cpp')
-rw-r--r-- | src/libs/xpcom18a4/xpcom/tests/TestCOMPtr.cpp | 651 |
1 files changed, 651 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/tests/TestCOMPtr.cpp b/src/libs/xpcom18a4/xpcom/tests/TestCOMPtr.cpp new file mode 100644 index 00000000..c48219e2 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/tests/TestCOMPtr.cpp @@ -0,0 +1,651 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is mozilla.org code. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Pierre Phaneuf <pp@ludusdesign.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#include <assert.h> +#include <stdio.h> +#include "nsCOMPtr.h" +#include "nsISupports.h" + +#ifdef HAVE_CPP_NEW_CASTS + #define STATIC_CAST(T,x) static_cast<T>(x) + #define REINTERPRET_CAST(T,x) reinterpret_cast<T>(x) +#else + #define STATIC_CAST(T,x) ((T)(x)) + #define REINTERPRET_CAST(T,x) ((T)(x)) +#endif + + +#define NS_IFOO_IID \ +{ 0x6f7652e0, 0xee43, 0x11d1, \ + { 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } } + +class IFoo : public nsISupports + { + public: + NS_DEFINE_STATIC_IID_ACCESSOR(NS_IFOO_IID) + + public: + IFoo(); + // virtual dtor because IBar uses our Release() + virtual ~IFoo(); + + NS_IMETHOD_(nsrefcnt) AddRef(); + NS_IMETHOD_(nsrefcnt) Release(); + NS_IMETHOD QueryInterface( const nsIID&, void** ); + + static void print_totals(); + + private: + unsigned int refcount_; + + static unsigned int total_constructions_; + static unsigned int total_destructions_; + }; + +class IBar; + + // some types I'll need +typedef unsigned long NS_RESULT; + + // some functions I'll need (and define below) + nsresult CreateIFoo( void** ); + nsresult CreateIBar( void** result ); + void AnIFooPtrPtrContext( IFoo** ); + void AnISupportsPtrPtrContext( nsISupports** ); + void AVoidPtrPtrContext( void** ); + void set_a_IFoo( nsCOMPtr<IFoo>* result ); +nsCOMPtr<IFoo> return_a_IFoo(); + + + + +unsigned int IFoo::total_constructions_; +unsigned int IFoo::total_destructions_; + +class test_message + { + public: + test_message() + { + printf("BEGIN unit tests for |nsCOMPtr|, compiled " __DATE__ "\n"); + } + + ~test_message() + { + IFoo::print_totals(); + printf("END unit tests for |nsCOMPtr|.\n"); + } + }; + +test_message gTestMessage; + + + /* + ... + */ + +void +IFoo::print_totals() + { + printf("total constructions/destructions --> %d/%d\n", + total_constructions_, total_destructions_); + } + +IFoo::IFoo() + : refcount_(0) + { + ++total_constructions_; + printf(" new IFoo@%p [#%d]\n", + STATIC_CAST(void*, this), total_constructions_); + } + +IFoo::~IFoo() + { + ++total_destructions_; + printf("IFoo@%p::~IFoo() [#%d]\n", + STATIC_CAST(void*, this), total_destructions_); + } + +nsrefcnt +IFoo::AddRef() + { + ++refcount_; + printf("IFoo@%p::AddRef(), refcount --> %d\n", + STATIC_CAST(void*, this), refcount_); + return refcount_; + } + +nsrefcnt +IFoo::Release() + { + int wrap_message = (refcount_ == 1); + if ( wrap_message ) + printf(">>"); + + nsrefcnt const newcount = --refcount_; + printf("IFoo@%p::Release(), refcount --> %d\n", + STATIC_CAST(void*, this), newcount); + + if ( !newcount ) + { + printf(" delete IFoo@%p\n", STATIC_CAST(void*, this)); + delete this; + } + + if ( wrap_message ) + printf("<<IFoo@%p::Release()\n", STATIC_CAST(void*, this)); + + return newcount; + } + +nsresult +IFoo::QueryInterface( const nsIID& aIID, void** aResult ) + { + printf("IFoo@%p::QueryInterface()\n", STATIC_CAST(void*, this)); + nsISupports* rawPtr = 0; + nsresult status = NS_OK; + + if ( aIID.Equals(GetIID()) ) + rawPtr = this; + else + { + nsID iid_of_ISupports = NS_ISUPPORTS_IID; + if ( aIID.Equals(iid_of_ISupports) ) + rawPtr = STATIC_CAST(nsISupports*, this); + else + status = NS_ERROR_NO_INTERFACE; + } + + NS_IF_ADDREF(rawPtr); + *aResult = rawPtr; + + return status; + } + +nsresult +CreateIFoo( void** result ) + // a typical factory function (that calls AddRef) + { + printf(">>CreateIFoo() --> "); + IFoo* foop = new IFoo; + printf("IFoo@%p\n", STATIC_CAST(void*, foop)); + + foop->AddRef(); + *result = foop; + + printf("<<CreateIFoo()\n"); + return 0; + } + +void +set_a_IFoo( nsCOMPtr<IFoo>* result ) + { + printf(">>set_a_IFoo()\n"); + assert(result); + + nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) ); + *result = foop; + printf("<<set_a_IFoo()\n"); + } + +nsCOMPtr<IFoo> +return_a_IFoo() + { + printf(">>return_a_IFoo()\n"); + nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) ); + printf("<<return_a_IFoo()\n"); + return foop; + } + + + + +#define NS_IBAR_IID \ +{ 0x6f7652e1, 0xee43, 0x11d1, \ + { 0x9c, 0xc3, 0x00, 0x60, 0x08, 0x8c, 0xa6, 0xb3 } } + +class IBar : public IFoo + { + public: + NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBAR_IID) + + public: + IBar(); + virtual ~IBar(); + + NS_IMETHOD QueryInterface( const nsIID&, void** ); + }; + +IBar::IBar() + { + printf(" new IBar@%p\n", STATIC_CAST(void*, this)); + } + +IBar::~IBar() + { + printf("IBar@%p::~IBar()\n", STATIC_CAST(void*, this)); + } + +nsresult +IBar::QueryInterface( const nsID& aIID, void** aResult ) + { + printf("IBar@%p::QueryInterface()\n", STATIC_CAST(void*, this)); + nsISupports* rawPtr = 0; + nsresult status = NS_OK; + + if ( aIID.Equals(GetIID()) ) + rawPtr = this; + else if ( aIID.Equals(NS_GET_IID(IFoo)) ) + rawPtr = STATIC_CAST(IFoo*, this); + else + { + nsID iid_of_ISupports = NS_ISUPPORTS_IID; + if ( aIID.Equals(iid_of_ISupports) ) + rawPtr = STATIC_CAST(nsISupports*, this); + else + status = NS_ERROR_NO_INTERFACE; + } + + NS_IF_ADDREF(rawPtr); + *aResult = rawPtr; + + return status; + } + + + +nsresult +CreateIBar( void** result ) + // a typical factory function (that calls AddRef) + { + printf(">>CreateIBar() --> "); + IBar* barp = new IBar; + printf("IBar@%p\n", STATIC_CAST(void*, barp)); + + barp->AddRef(); + *result = barp; + + printf("<<CreateIBar()\n"); + return 0; + } + +void +AnIFooPtrPtrContext( IFoo** ) + { + } + +void +AVoidPtrPtrContext( void** ) + { + } + +void +AnISupportsPtrPtrContext( nsISupports** ) + { + } + + +// Optimism +#define TEST_EXCEPTIONS 1 + +// HAVE_CPP_EXCEPTIONS is defined automagically on unix +#if defined(XP_UNIX) || defined(XP_BEOS) || defined(XP_OS2) +#if !defined(HAVE_CPP_EXCEPTIONS) +#undef TEST_EXCEPTIONS +#endif +#endif + +#ifdef TEST_EXCEPTIONS +static +nsresult +TestBloat_Raw() + { + IBar* barP = 0; + nsresult result = CreateIBar(REINTERPRET_CAST(void**, &barP)); + + if ( barP ) + { + try + { + IFoo* fooP = 0; + if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(IFoo), REINTERPRET_CAST(void**, &fooP)) ) ) + { + try + { + fooP->print_totals(); + } + catch( ... ) + { + NS_RELEASE(fooP); + throw; + } + + NS_RELEASE(fooP); + } + } + catch( ... ) + { + NS_RELEASE(barP); + throw; + } + + NS_RELEASE(barP); + } + + return result; + } +#endif // TEST_EXCEPTIONS + +static +nsresult +TestBloat_Raw_Unsafe() + { + IBar* barP = 0; + nsresult result = CreateIBar(REINTERPRET_CAST(void**, &barP)); + + if ( barP ) + { + IFoo* fooP = 0; + if ( NS_SUCCEEDED( result = barP->QueryInterface(NS_GET_IID(IFoo), REINTERPRET_CAST(void**, &fooP)) ) ) + { + fooP->print_totals(); + NS_RELEASE(fooP); + } + + NS_RELEASE(barP); + } + + return result; + } + + +static +nsresult +TestBloat_Smart() + { + nsCOMPtr<IBar> barP; + nsresult result = CreateIBar( getter_AddRefs(barP) ); + + nsCOMPtr<IFoo> fooP( do_QueryInterface(barP, &result) ); + + if ( fooP ) + fooP->print_totals(); + + return result; + } + + + + +nsCOMPtr<IFoo> gFoop; + +int +main() + { + printf(">>main()\n"); + + printf("sizeof(nsCOMPtr<IFoo>) --> %zd\n", sizeof(nsCOMPtr<IFoo>)); + +#ifdef TEST_EXCEPTIONS + TestBloat_Raw(); +#endif // TEST_EXCEPTIONS + TestBloat_Raw_Unsafe(); + TestBloat_Smart(); + + + { + printf("\n### Test 1: will a |nsCOMPtr| call |AddRef| on a pointer assigned into it?\n"); + nsCOMPtr<IFoo> foop( do_QueryInterface(new IFoo) ); + + printf("\n### Test 2: will a |nsCOMPtr| |Release| its old pointer when a new one is assigned in?\n"); + foop = do_QueryInterface(new IFoo); + + // [Shouldn't compile] Is it a compile time error to try to |AddRef| by hand? + //foop->AddRef(); + + // [Shouldn't compile] Is it a compile time error to try to |Release| be hand? + //foop->Release(); + + // [Shouldn't compile] Is it a compile time error to try to |delete| an |nsCOMPtr|? + //delete foop; + + printf("\n### Test 3: can you |AddRef| if you must?\n"); + STATIC_CAST(IFoo*, foop)->AddRef(); + + printf("\n### Test 4: can you |Release| if you must?\n"); + STATIC_CAST(IFoo*, foop)->Release(); + + printf("\n### Test 5: will a |nsCOMPtr| |Release| when it goes out of scope?\n"); + } + + { + printf("\n### Test 6: will a |nsCOMPtr| call the correct destructor?\n"); + nsCOMPtr<IFoo> foop( do_QueryInterface(new IBar) ); + } + + { + printf("\n### Test 7: can you compare one |nsCOMPtr| with another [!=]?\n"); + + nsCOMPtr<IFoo> foo1p( do_QueryInterface(new IFoo) ); + + // [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|? + //AnIFooPtrPtrContext(&foo1p); + + // [Shouldn't compile] Is it a compile time error to omit |getter_[doesnt_]AddRef[s]|? + //AVoidPtrPtrContext(&foo1p); + + nsCOMPtr<IFoo> foo2p( do_QueryInterface(new IFoo) ); + + if ( foo1p != foo2p ) + printf("foo1p != foo2p\n"); + else + printf("foo1p == foo2p\n"); + + printf("\n### Test 7.5: can you compare a |nsCOMPtr| with NULL, 0, nsnull [!=]?\n"); + if ( foo1p != 0 ) + printf("foo1p != 0\n"); + if ( 0 != foo1p ) + printf("0 != foo1p\n"); + if ( foo1p == 0 ) + printf("foo1p == 0\n"); + if ( 0 == foo1p ) + printf("0 == foo1p\n"); + + + IFoo* raw_foo2p = foo2p.get(); + + printf("\n### Test 8: can you compare a |nsCOMPtr| with a raw interface pointer [!=]?\n"); + if ( foo1p.get() != raw_foo2p ) + printf("foo1p != raw_foo2p\n"); + else + printf("foo1p == raw_foo2p\n"); + + + printf("\n### Test 9: can you assign one |nsCOMPtr| into another?\n"); + foo1p = foo2p; + + printf("\n### Test 10: can you compare one |nsCOMPtr| with another [==]?\n"); + if ( foo1p == foo2p ) + printf("foo1p == foo2p\n"); + else + printf("foo1p != foo2p\n"); + + printf("\n### Test 11: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n"); + if ( raw_foo2p == foo2p.get() ) + printf("raw_foo2p == foo2p\n"); + else + printf("raw_foo2p != foo2p\n"); + +#if 1 + printf("\n### Test 11.5: can you compare a |nsCOMPtr| with a raw interface pointer [==]?\n"); + if ( nsCOMPtr<IFoo>( raw_foo2p ) == foo2p ) + printf("raw_foo2p == foo2p\n"); + else + printf("raw_foo2p != foo2p\n"); +#endif + + printf("\n### Test 12: bare pointer test?\n"); + if ( foo1p ) + printf("foo1p is not NULL\n"); + else + printf("foo1p is NULL\n"); + + printf("\n### Test 13: numeric pointer test?\n"); + if ( foo1p == 0 ) + printf("foo1p is NULL\n"); + else + printf("foo1p is not NULL\n"); + +#if 0 + if ( foo1p == 1 ) + printf("foo1p allowed compare with in\n"); +#endif + + printf("\n### Test 14: how about when two |nsCOMPtr|s referring to the same object go out of scope?\n"); + } + + { + printf("\n### Test 15,16 ...setup...\n"); + IFoo* raw_foo1p = new IFoo; + raw_foo1p->AddRef(); + + IFoo* raw_foo2p = new IFoo; + raw_foo2p->AddRef(); + + printf("\n### Test 15: what if I don't want to |AddRef| when I construct?\n"); + nsCOMPtr<IFoo> foo1p( dont_AddRef(raw_foo1p) ); + //nsCOMPtr<IFoo> foo1p = dont_AddRef(raw_foo1p); + + printf("\n### Test 16: what if I don't want to |AddRef| when I assign in?\n"); + nsCOMPtr<IFoo> foo2p; + foo2p = dont_AddRef(raw_foo2p); + } + + + + + + + + { + printf("\n### setup for Test 17\n"); + nsCOMPtr<IFoo> foop; + printf("### Test 17: basic parameter behavior?\n"); + CreateIFoo( nsGetterAddRefs<IFoo>(foop) ); + } + printf("### End Test 17\n"); + + + { + printf("\n### setup for Test 18\n"); + nsCOMPtr<IFoo> foop; + printf("### Test 18: basic parameter behavior, using the short form?\n"); + CreateIFoo( getter_AddRefs(foop) ); + } + printf("### End Test 18\n"); + + + { + printf("\n### setup for Test 19, 20\n"); + nsCOMPtr<IFoo> foop; + printf("### Test 19: reference parameter behavior?\n"); + set_a_IFoo(address_of(foop)); + + printf("### Test 20: return value behavior?\n"); + foop = return_a_IFoo(); + } + printf("### End Test 19, 20\n"); + + { + printf("\n### setup for Test 21\n"); + nsCOMPtr<IFoo> fooP; + + printf("### Test 21: is |QueryInterface| called on assigning in a raw pointer?\n"); + fooP = do_QueryInterface(new IFoo); + } + printf("### End Test 21\n"); + + { + printf("\n### setup for Test 22\n"); + nsCOMPtr<IFoo> fooP; + fooP = do_QueryInterface(new IFoo); + + nsCOMPtr<IFoo> foo2P; + + printf("### Test 22: is |QueryInterface| _not_ called when assigning in a smart-pointer of the same type?\n"); + foo2P = fooP; + } + printf("### End Test 22\n"); + + { + printf("\n### setup for Test 23\n"); + nsCOMPtr<IBar> barP( do_QueryInterface(new IBar) ); + + printf("### Test 23: is |QueryInterface| called when assigning in a smart-pointer of a different type?\n"); + + nsCOMPtr<IFoo> fooP( do_QueryInterface(barP) ); + if ( fooP ) + printf("an IBar* is an IFoo*\n"); + } + printf("### End Test 23\n"); + + + { + nsCOMPtr<IFoo> fooP; + + AnIFooPtrPtrContext( getter_AddRefs(fooP) ); + AVoidPtrPtrContext( getter_AddRefs(fooP) ); + AnISupportsPtrPtrContext( getter_AddRefs(fooP) ); + } + + + { + nsCOMPtr<nsISupports> supportsP; + + AVoidPtrPtrContext( getter_AddRefs(supportsP) ); + AnISupportsPtrPtrContext( getter_AddRefs(supportsP) ); + } + + + printf("\n### Test 24: will a static |nsCOMPtr| |Release| before program termination?\n"); + gFoop = do_QueryInterface(new IFoo); + + printf("<<main()\n"); + return 0; + } + |